T-matrix formulation of real-space dynamical mean-field theory and the Friedel sum rule for correlated lattice fermions
K. Byczuk, B. Chatterjee, and D. Vollhardt
TL;DR
This paper develops a real-space dynamical mean-field theory framework using scattering theory and derives the Friedel sum rule for interacting lattice fermions at zero temperature.
Contribution
It introduces a novel formulation of real-space DMFT within scattering theory and establishes the Friedel sum rule for correlated lattice fermions.
Findings
Derived Friedel sum rule for interacting lattice fermions.
Formulated real-space DMFT using scattering theory.
Applicable at zero temperature for correlated systems.
Abstract
We formulate real-space dynamical mean-field theory within scattering theory. Thereby the Friedel sum rule is derived for interacting lattice fermions at zero temperature.
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